As filed with the Securities and Exchange Commission on February 8, 2024 Registration No. 333-276562 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 3 to REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Nuwellis, Inc. (Exact name of registrant as specified in its charter) Delaware 3845 68-0533453 (State or Other Jurisdiction of Incorporation or Organization) (Primary Standard Industrial Classification Code Number) 12988 Valley View Road Eden Prairie, Minnesota 55 ...

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on February 5, 2024 Registration No. 333-276562 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 2 to FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Nuwellis, Inc. (Exact name of registrant as specified in its charter) Delaware 3845 68-0533453 (State or Other Jurisdiction of Incorporation or Organization) (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Ident ...

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on January 30, 2024 Registration No. 333-276562 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 1 to FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Nuwellis, Inc. (Exact name of registrant as specified in its charter) Delaware 3845 68-0533453 (State or Other Jurisdiction of Incorporation or Organization) (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Ident ...

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on January 17, 2024 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Nuwellis, Inc. (Exact name of registrant as specified in its charter) (State or Other Jurisdiction of Incorporation or Organization) (Primary Standard Industrial Classification Code Number) 12988 Valley View Road Eden Prairie, Minnesota 55344 (952) 345-4200 (Add ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __________ to __________ Commission file number 001-35312 NUWELLIS, INC. (Exact Name of Registrant as Specified in its Charter) Delaware No. 68-0533453 (State or Oth ...

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 NUWELLIS, INC. TABLE OF CONTENTS As filed with the Securities and Exchange Commission on September 29, 2023 Registration No. 333-274610 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 1 to FORM S-1 (Exact name of registrant as specified in its charter) Delaware 3845 68-0533453 (State or Other Jurisdiction of Incorporation or Organization) (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Ide ...

As filed with the Securities and Exchange Commission on September 20, 2023 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 TABLE OF CONTENTS (Primary Standard Industrial Classification Code Number) 12988 Valley View Road Eden Prairie, Minnesota 55344 (952) 345-4200 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 NUWELLIS, INC. (Exact name of registrant as specified in its charter) (State or Other Jurisdiction of Incorporation or Organization) (A ...

FORM 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 NUWELLIS, INC. (Exact Name of Registrant as Specified in its Charter) Delaware No. 68-0533453 (State or Other Jurisdiction of Incorporation or Organization) (I.R.S. Employer Identification No.) 12988 Vall ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __________ to __________ Commission file number 001-35312 NUWELLIS, INC. (Exact Name of Registrant as Specified in its Charter) Delaware No. 68-0533453 (State or Other Juri ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended: December 31, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission file number 001-35312 NUWELLIS, INC. (Exact name of registrant as specified in its charter) Delaware 68-0533453 (State or other jurisdiction of incorporation or o ...